Self and samuel h



UNITED STATES" PAdri-JrrrY OFFICE. g

Y vCHARLES ANDREW SYCHEFFLER, OF CHICAGO, ILLINOIS, ASSIGNOR TO HIM- SELF AND SAMUEL- H. ADAMS,

E SAME PLAGE.

sEwER-GA's-CHECK.

SPECIFICATION forming part of Letters Patent 294,511, dated March' 4, 1884.

To all 07107101` t may Concern.- Be it known that I, CHARLES A. SCHEE- FLEE, of Chicago, in the county of. Cook and State of Illinois, have invented new and useful Improvements in Sewer-Gas Checks, of which the following is a specification, reference being had to the accompanying drawings, illustrating the invention, in which- Figure'J 1 iS a vertical central sectional elero Vation of a mechanism embodying my invention as attached to a sink; Fig. 2, an inverted view of Fig. 1, with the lever removed and the device removed from the sink, Fig. 3 an velevation of Fig. l with the lever removed; ,I5 Fig. 4, a top or plan of the gate and its packing removed from the other mechanism.

rIhe object of the present invention is to provide simple and effectual means for shutting off sewer-gas at sinks, wash-bowls, bath- .o tubs, and other pipe opening or leading to the sewers. .v

The nature of the invention consists in a case which is made circular in form and with an opening extending round to about onehalf of its periphery. Above the opening is formed an annular seat lfor the edge of a segment-gate to slide on, the lower edge of the 4gate sliding on the sink. The gateis faced on its convex side and lower edge with rubber, 3o so as to form gas-tight seats against the case and sinh bottom. rIlhe gate is opened and closed by an arm attached thereto and to a central post, which has a bearing in the case, and is turned by a lever at the out-side thereof. It is proper to state-that in order rapidly to empty sinks of water it is the customlto form large openings in their bottoms, and cover such openings with perforated metal screens, which cannot be stopped with the 4o ordinary plug stopper; hence the necessity of resorting to some suitable means which will shutoff the escaping gas when water is not running down the waste-pipe, and which shall not obstruct the escape of water nor hold any in the sink. To this end I have constructed what I term a gate,77 whose lower guide or seat is the face of the bottom plate of the Sink,

replication mea April 17, iss. (No model.)

so that when thegate is open the water is free to discharge and. not be obstructed by any rim or ilange.

One' method of operating this gate is represented in the drawings, a description of which A represents a. non-corrosive metal case,

D, andon the inside ofthe case, is formed an annular seat or guide, -as shown at I, Figs. l and 2, for the 4upper edge of the gate B C to slide on. strip of metal, B, somewhat smaller than the inside of the concave gate-guide, in order that a strip of rubber maybe placed on the convex sideof the gate and cover its lower edge, as shown, that there may be a gas-tight bearing against the sink-bottom G and the case A. Thebest form to' cast the rubber for this purpose is to form a alnge on the inside of its bottom part, as shown at x x, Fig. l, and iianges K K on its ends, as shown at Fig. 4. The gate or metal part thereof, B, then has four bearings against the rubber, and it will stayin place by rivets put through its ends, A and operate with but little friction. The post This gate is formed of a segment- Ehas a proper bearing in the case, and is 8o made gas-tight by rubbers d P, Fig. l. The arm J is made rigidrto the post and to thesegment-gate B, and the lever F is made fast to the top thereof, whereby when the lever be turned the gate B C will be opened or closed, 8 5

as the case may be. A stop, Z, may project up from the top of the .casev to control the movement which the lever may have, that it may be known when the gate is opened or closed.

The waste-pipe is shown at'W.

This form ofthe case is,v found very convenient, and to take the least metal of any within my knowledge; but the shape thereof may be changed and my inv providing.;` the gate has alower seat on the sink-bottoni.

Having thus described 5 claim, and desire to secure by Letters Patent of the United States, is

In sewer-gas Cheeks, the ease A, provided with the seinieireldar flange a, an opening, D, and an annular seat, I, in combination with ention be retained, 1 the sliding` gateB C, post E, and lever F, the 1o gate having an upper bearing on the guide I, a bearing on the vertical part of the ease, myinvent-ionvhatI and a lower bearing on the sink-bottom, as

specified.

CHARLES ANDREW SLIIEFFLER. XYitnesses:

G. L. CHAUX, J. S. HUEY. 

